11117839 has 4 divisors (see below), whose sum is σ = 11202840. Its totient is φ = 11032840.

The previous prime is 11117833. The next prime is 11117857. The reversal of 11117839 is 93871111.

11117839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11117839 - 2⁵ = 11117807 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11117839.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11117833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42304 + ... + 42565.

It is an arithmetic number, because the mean of its divisors is an integer number (2800710).

Almost surely, 2^11117839 is an apocalyptic number.

11117839 is a deficient number, since it is larger than the sum of its proper divisors (85001).

11117839 is an equidigital number, since it uses as much as digits as its factorization.

11117839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85000.

The product of its digits is 1512, while the sum is 31.

The square root of 11117839 is about 3334.3423639453. The cubic root of 11117839 is about 223.1893463117.

The spelling of 11117839 in words is "eleven million, one hundred seventeen thousand, eight hundred thirty-nine".